import axios from 'axios'
import qs from 'qs'
import Vue from 'vue'
import {  Message  } from 'element-ui'
Vue.component(Message)

axios.defaults.timeout = 5000;                        //响应时间
axios.defaults.headers.post['Content-Type'] = 'application/json;charset=UTF-8';        //配置请求头
axios.defaults.headers.put['Content-Type'] = 'application/json;charset=UTF-8';        //配置请求头
axios.defaults.baseURL = 'http://localhost:8888';   //配置接口地址

//POST传参序列化(添加请求拦截器)
axios.interceptors.request.use((config) => {
    //在发送请求之前做某件事
    if(config.method  === 'post'){
        // config.data = qs.stringify(config.data);
    }
    return config;
},(error) =>{
    console.log('错误的传参')
    return Promise.reject(error);
});

//返回状态判断(添加响应拦截器)
axios.interceptors.response.use((res) =>{



  // 后端全局错误返回
  if (res.data.code!=200){

    Message({
      showClose: true,
      message: res.data.code + "  " + res.data.message,
      type: 'error',
      center: true
    });
  }



  //对响应数据做些事
    if(!res.data.success){
        return Promise.resolve(res);
    }

    return res;
}, (error) => {
    console.log('网络异常')
    return Promise.reject(error);
});

//返回一个Promise(发送post请求)
export function fetchPost(url, params) {
    return new Promise((resolve, reject) => {
        axios.post(url, params)
            .then(response => {
                resolve(response);
            }, err => {
                reject(err);
            })
            .catch((error) => {
                reject(error)
            })
    })
}
////返回一个Promise(发送get请求)
export function fetchGet(url, param) {
    return new Promise((resolve, reject) => {
        axios.get(url, {params: param})
            .then(response => {
                resolve(response)
            }, err => {
                reject(err)
            })
            .catch((error) => {
                reject(error)
            })
    })
}

////返回一个Promise(发送delete请求)
export function fetchDelete(url, param) {
  return new Promise((resolve, reject) => {
    axios.delete(url, {params: param})
      .then(response => {
        resolve(response)
      }, err => {
        reject(err)
      })
      .catch((error) => {
        reject(error)
      })
  })
}

//返回一个Promise(发送pt请求)
export function fetchPut(url, params) {
  return new Promise((resolve, reject) => {
    axios.put(url, params)
      .then(response => {
        resolve(response);
      }, err => {
        reject(err);
      })
      .catch((error) => {
        reject(error)
      })
  })
}
export default {
    fetchPost,
    fetchGet,
  fetchPut,
  fetchDelete,
}
